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A Simple System for the Preparation of Submicrometer Lead Titanate Powders by the Sol‐Gel Method
Author(s) -
Kumar Viswanathan,
Marimuthu Ramadoss,
Patil Shashikumar G.,
Ohya Yutaka,
Takahashi Yasutaka
Publication year - 1996
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1996.tb09049.x
Subject(s) - lead titanate , materials science , titanate , calcination , sol gel , stoichiometry , chemical engineering , ceramic , titanium , lead acetate , homogeneity (statistics) , particle size , mineralogy , nanotechnology , metallurgy , catalysis , ferroelectricity , chemistry , organic chemistry , statistics , mathematics , optoelectronics , toxicity , dielectric , engineering
This paper reports a new system for the preparation of lead titanate powders by the sol‐gel method. In this system basic lead acetate, (CH 3 COO) 2 Pb.Pb(OH) 2 , is used as the lead precursor instead of the widely used Pb(OOCCH 3 ) 2 .3H 2 O and titanium tetrabutoxide monomer. This new system simplifies the chemical processing of precursor solutions of lead titanate, increases their stability in air, and offers good control of Pb:Ti stoichiometry. The xerogel, obtained from the precursor solution by aging at room temperature, is found to have a higher inorganic content. Gel‐to‐ceramic conversion is achieved by calcining the xerogel at 600°C. The phase purity, particle size, morphology, and compositional homogeneity of the gel‐derived powders are examined by XRD, TEM, and ICP‐OES.